A wristbreaker is a large test or hand-written essay that requires an unusually large amount of writing compared to the average. You know you have a wristbreaker when the next day, it looks like you injected your wrist with steroids.
Joe: Bob! Holy crap, what happened to your wrist?
Bob: I had a wristbreaker yesterday in history class, and no my wrist muscle is jacked.
Bob: I had a wristbreaker yesterday in history class, and no my wrist muscle is jacked.
by cee-em-kay March 21, 2011